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lions [1.4K]
3 years ago
10

I need help for this

Mathematics
1 answer:
jenyasd209 [6]3 years ago
6 0

Answer:

Option 3

Step-by-step explanation:

9root(x) - 3root(x)

Take root(x) common:

root(x) × (9-3)

root(x) × 6

6root(x)

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2 years ago
Use the Ratio Test to determine whether the series is convergent or divergent.
natka813 [3]

Answer:

The series is absolutely convergent.

Step-by-step explanation:

By ratio test, we find the limit as n approaches infinity of

|[a_(n+1)]/a_n|

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a_(n+1) = (-1)^n.3^(n+1)/(2^(n+1).(n+1)^3)

[a_(n+1)]/a_n = [(-1)^n.3^(n+1)/(2^(n+1).(n+1)^3)] × [(2^n.n^3)/(-1)^(n - 1).(3^n)]

= |-3n³/2(n+1)³|

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3 0
2 years ago
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